vue中使用element ui的弹窗与echarts之间的问题详解

<el-drawer
   title="分析图表"
   :modal="false"
   :close-on-click-modal="false"
   :modal-append-to-body="false"
   size="600px"
   :visible.sync="dataVisible"
   @opened="opens"
  >
  <div ref="main" style="width: 100%;height:100%;"></div>
</el-drawer>

export default {
 data() {
  return {
   isColor: true,
   option1: {
    title: {
     text: '总资产占比分析',
     x: 'left'
    },
    tooltip: {
     trigger: 'item',
     formatter: '{a} <br/>{b} : {c} ({d}%)'
    },
    legend: {
     orient: 'vertical',
     right: '10%',
     top: '35%',
     data: ['A', 'B', 'C', 'D']
    },
    series: [
     {
      name: '访问来源',
      type: 'pie',
      radius: '70%',
      center: ['25%', '60%'],
      data: [
       { value: 335, name: 'A' },
       { value: 310, name: 'B' },
       { value: 234, name: 'C' },
       { value: 135, name: 'D' }
      ],
      label: {
       normal: {
        show: false,
        position: 'center'
       }
      }
     }
    ]
   },
}}
}
method:{
  opens(){
     this.$nextTick(() => {
      this.pie1()
   })
  },
  pie1(){
    this.$echarts.init(this.$refs.main).setOption(this.option1)
  }
}